Felix Frankfurter,
Universal Oil Products Co v. Root Refining C(…
“ No doubt, a court that undertakes an investigation of fraud upon it may avail itself, as did the court below, of amici to represent the public interest in the administration of justice. But compensation is not the normal reward of those who offer such services. After all, a federal cor t can always call on law officers of the United States to serve as amici. Here the amici also represented substantial private interests. Their clients were interested in vacating the Root judgment though they would not subject themselves to the court's jurisdiction and the hazards of an adverse determination. ”
